Mini Shell
<?php
if ( ! class_exists( 'acf_field' ) ) :
class acf_field {
// vars
var $name = '',
$label = '',
$category = 'basic',
$defaults = array(),
$l10n = array(),
$public = true;
public $show_in_rest = true;
/*
* __construct
*
* This function will initialize the field type
*
* @type function
* @date 5/03/2014
* @since 5.0.0
*
* @param n/a
* @return n/a
*/
function __construct() {
// initialize
$this->initialize();
// register info
acf_register_field_type_info(
array(
'label' => $this->label,
'name' => $this->name,
'category' => $this->category,
'public' => $this->public,
)
);
// value
$this->add_field_filter( 'acf/load_value', array( $this, 'load_value' ), 10, 3 );
$this->add_field_filter( 'acf/update_value', array( $this, 'update_value' ), 10, 3 );
$this->add_field_filter( 'acf/format_value', array( $this, 'format_value' ), 10, 3 );
$this->add_field_filter( 'acf/validate_value', array( $this, 'validate_value' ), 10, 4 );
$this->add_field_action( 'acf/delete_value', array( $this, 'delete_value' ), 10, 3 );
// field
$this->add_field_filter( 'acf/validate_rest_value', array( $this, 'validate_rest_value' ), 10, 3 );
$this->add_field_filter( 'acf/validate_field', array( $this, 'validate_field' ), 10, 1 );
$this->add_field_filter( 'acf/load_field', array( $this, 'load_field' ), 10, 1 );
$this->add_field_filter( 'acf/update_field', array( $this, 'update_field' ), 10, 1 );
$this->add_field_filter( 'acf/duplicate_field', array( $this, 'duplicate_field' ), 10, 1 );
$this->add_field_action( 'acf/delete_field', array( $this, 'delete_field' ), 10, 1 );
$this->add_field_action( 'acf/render_field', array( $this, 'render_field' ), 9, 1 );
$this->add_field_action( 'acf/render_field_settings', array( $this, 'render_field_settings' ), 9, 1 );
$this->add_field_filter( 'acf/prepare_field', array( $this, 'prepare_field' ), 10, 1 );
$this->add_field_filter( 'acf/translate_field', array( $this, 'translate_field' ), 10, 1 );
// input actions
$this->add_action( 'acf/input/admin_enqueue_scripts', array( $this, 'input_admin_enqueue_scripts' ), 10, 0 );
$this->add_action( 'acf/input/admin_head', array( $this, 'input_admin_head' ), 10, 0 );
$this->add_action( 'acf/input/form_data', array( $this, 'input_form_data' ), 10, 1 );
$this->add_filter( 'acf/input/admin_l10n', array( $this, 'input_admin_l10n' ), 10, 1 );
$this->add_action( 'acf/input/admin_footer', array( $this, 'input_admin_footer' ), 10, 1 );
// field group actions
$this->add_action( 'acf/field_group/admin_enqueue_scripts', array( $this, 'field_group_admin_enqueue_scripts' ), 10, 0 );
$this->add_action( 'acf/field_group/admin_head', array( $this, 'field_group_admin_head' ), 10, 0 );
$this->add_action( 'acf/field_group/admin_footer', array( $this, 'field_group_admin_footer' ), 10, 0 );
}
/*
* initialize
*
* This function will initialize the field type
*
* @type function
* @date 27/6/17
* @since 5.6.0
*
* @param n/a
* @return n/a
*/
function initialize() {
/* do nothing */
}
/*
* add_filter
*
* This function checks if the function is_callable before adding the filter
*
* @type function
* @date 5/03/2014
* @since 5.0.0
*
* @param $tag (string)
* @param $function_to_add (string)
* @param $priority (int)
* @param $accepted_args (int)
* @return n/a
*/
function add_filter( $tag = '', $function_to_add = '', $priority = 10, $accepted_args = 1 ) {
// bail early if no callable
if ( ! is_callable( $function_to_add ) ) {
return;
}
// add
add_filter( $tag, $function_to_add, $priority, $accepted_args );
}
/*
* add_field_filter
*
* This function will add a field type specific filter
*
* @type function
* @date 29/09/2016
* @since 5.4.0
*
* @param $tag (string)
* @param $function_to_add (string)
* @param $priority (int)
* @param $accepted_args (int)
* @return n/a
*/
function add_field_filter( $tag = '', $function_to_add = '', $priority = 10, $accepted_args = 1 ) {
// append
$tag .= '/type=' . $this->name;
// add
$this->add_filter( $tag, $function_to_add, $priority, $accepted_args );
}
/*
* add_action
*
* This function checks if the function is_callable before adding the action
*
* @type function
* @date 5/03/2014
* @since 5.0.0
*
* @param $tag (string)
* @param $function_to_add (string)
* @param $priority (int)
* @param $accepted_args (int)
* @return n/a
*/
function add_action( $tag = '', $function_to_add = '', $priority = 10, $accepted_args = 1 ) {
// bail early if no callable
if ( ! is_callable( $function_to_add ) ) {
return;
}
// add
add_action( $tag, $function_to_add, $priority, $accepted_args );
}
/*
* add_field_action
*
* This function will add a field type specific filter
*
* @type function
* @date 29/09/2016
* @since 5.4.0
*
* @param $tag (string)
* @param $function_to_add (string)
* @param $priority (int)
* @param $accepted_args (int)
* @return n/a
*/
function add_field_action( $tag = '', $function_to_add = '', $priority = 10, $accepted_args = 1 ) {
// append
$tag .= '/type=' . $this->name;
// add
$this->add_action( $tag, $function_to_add, $priority, $accepted_args );
}
/*
* validate_field
*
* This function will append default settings to a field
*
* @type filter ("acf/validate_field/type={$this->name}")
* @since 3.6
* @date 23/01/13
*
* @param $field (array)
* @return $field (array)
*/
function validate_field( $field ) {
// bail early if no defaults
if ( ! is_array( $this->defaults ) ) {
return $field;
}
// merge in defaults but keep order of $field keys
foreach ( $this->defaults as $k => $v ) {
if ( ! isset( $field[ $k ] ) ) {
$field[ $k ] = $v;
}
}
// return
return $field;
}
/*
* admin_l10n
*
* This function will append l10n text translations to an array which is later passed to JS
*
* @type filter ("acf/input/admin_l10n")
* @since 3.6
* @date 23/01/13
*
* @param $l10n (array)
* @return $l10n (array)
*/
function input_admin_l10n( $l10n ) {
// bail early if no defaults
if ( empty( $this->l10n ) ) {
return $l10n;
}
// append
$l10n[ $this->name ] = $this->l10n;
// return
return $l10n;
}
/**
* Add additional validation for fields being updated via the REST API.
*
* @param bool $valid
* @param mixed $value
* @param array $field
*
* @return bool|WP_Error
*/
public function validate_rest_value( $valid, $value, $field ) {
return $valid;
}
/**
* Return the schema array for the REST API.
*
* @param array $field
* @return array
*/
public function get_rest_schema( array $field ) {
$schema = array(
'type' => array( 'string', 'null' ),
'required' => ! empty( $field['required'] ),
);
if ( isset( $field['default_value'] ) && '' !== $field['default_value'] ) {
$schema['default'] = $field['default_value'];
}
return $schema;
}
/**
* Return an array of links for addition to the REST API response. Each link is an array and must have both `rel` and
* `href` keys. The `href` key must be a REST API resource URL. If a link is marked as `embeddable`, the `_embed` URL
* parameter will trigger WordPress to dispatch an internal sub request and load the object within the same request
* under the `_embedded` response property.
*
* e.g;
* [
* [
* 'rel' => 'acf:post',
* 'href' => 'https://example.com/wp-json/wp/v2/posts/497',
* 'embeddable' => true,
* ],
* [
* 'rel' => 'acf:user',
* 'href' => 'https://example.com/wp-json/wp/v2/users/2',
* 'embeddable' => true,
* ],
* ]
*
* @param mixed $value The raw (unformatted) field value.
* @param string|int $post_id
* @param array $field
* @return array
*/
public function get_rest_links( $value, $post_id, array $field ) {
return array();
}
/**
* Apply basic formatting to prepare the value for default REST output.
*
* @param mixed $value
* @param string|int $post_id
* @param array $field
* @return mixed
*/
public function format_value_for_rest( $value, $post_id, array $field ) {
return $value;
}
}
endif; // class_exists check
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